Machine for stamping envelops.



No. 884,263. A I PATENTED APR. 7., 1908.

H. W. BUCHANAN. MACHINE FOR STAMPING ENVELOPS.

APPLICATION FILED APE. 11,1907.

3 sums-sum 1.

rm: NORRIS PETERS co WASHINGTON; n. c.

PATENTED APR. 7, 1908. H. W. BUCHANAN. MACHINE FOR STAMPING ENVELOPS.

APPLICATION FILED APB.11,1907.

s SHEETS-SHEET z] THE NORRIS PETERS ca, wAsumnrou, n. c.

, PATENTED APR. 7, 1908. H. w. BUCHANAN. MACHINE FOR STAMPING ENVELOPS.

3 SHEETS-SHEET 3.

APPLICATION FILED 'APR. 11,1907.

noentoz wam I V Fig. 3 is a section on the HAROLD W. BUCHANAN, OFMINNEAPOLIS, MINNESOTA.

MACHINE FOR STAMPING ENVELOPS.

Specification of Letters Patent.

Patented April 7, 1908.

Application filed April 11, 1907. Serial No. 367,571.

To all whom it may concern:

Be it known that I, HAROLD W. BUCH- ANAN, a citizen of the UnitedStates, residing at Minneapolis, in the county of Hennepin, State ofMinnesota, have invented certain new and useful Improvements in Machinesfor Stamping Envelops and I do hereby declare the following to be afull, clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

This invention relates to new and useful improvements in machines forstamping envelops, and it has particular reference to a mac 'ne of thisclass including means for feeding a sealing strip or sheet, means forcutting said strip, and means for affixing the portion cut from thestrip to an envelop passed therebeneath.

In connection with a machine of the above class the invention aims as aprimary object to provide novel means for feeding the envelops to bestamped and the sealing strips simultaneously with the movement of thecutting and stamping plunger in the accomplishment of its function.

The details of construction will appear in the course of the followingdescription, in which reference is had to the accompanying drawingsforming a part of this specification, like characters designatingsimilar parts throughout the several views, wherein:

Figure 1 is a side elevation of a machine constructed in accordance withthe present invention. Fig. 2 is a top plan view thereof.

line 33 of Fig. 2, showing the feeding table for the sealing strip, andthe associated parts thereof. Fig. 4 is a detailed perspective view ofthe operating lever and its connection with the various correlatedmechanisms. Fig. 5 is asection on the line 5-5 of Fig. 2, illustratingin detail the connection between the operating lever and the pulley ofthe envelop conveyer, the same connection being likewise employedbetween the operating lever. and the reel upon which the sealing stripis carried. Fig. 6 is a detailed plan view of the strip from which thesealing sheets are cut by mechanism to be described hereinafter. Fig. 7is an enlarged detailed side elevation prf the connection illustrated insection in Referring specifically to the accompanyin drawin s thenumeral 1 designates a table formed with a transverse recess 2 in itsupper surface, the envelop conveyer 3, preferably an endless apronhaving movement through said recess. The transverse sides of the recess2 are defined by arallel knives 4, having sharpened upper e ges andcoacting in the function of cutting the sealin sheets or stickers with aplunger 5, movable into the recess 2. A receptacle 6 for water tomoisten the gum underneath surface of the sealing sheets is embedded inthe table 1 rearwardly of the recess 2 and a ground glass roller 7 ismounted for rotation in said receptacle transversely thereof The table 1is provided at its rear end with vertically eX- tending parallel bracketbearings 8, in which is journaled the ends of a transverse shaft 9, thelatter carrying a reel 10 upon which the sealing stri 11 is wound andfrom which it is unwound uring the action of the machine. The strip 11from the reel 10 is passed over a transverse guide ulley 12 having itsshaft 13 journaled in the ower part of the brackets 8 and from the ulley12 it is passed longitudinally over t e table 1 and over a similarpulley 14, the shaft 15 of which has its ends journaled in the lowerpart of bracket bearing 16, in the up er ends of which a transverseshaft 17 is ournaled, the latter carrying a reel 18 upon which the strip11 is wound during the action of the machine. The shaft 17 has one endrojected beyond the bearing 16 at one si e thereof and a weight 19 issuspended by'a cord or cable 20 from the projecting end of the shaft 17,the gravity of the weight serving to rotate the reel 17 and feed thestrip when the reel 10 is released by an escapement mechanism to belater described. The conveyer 3 is of the endless belt type and istrained over sup porting pulleys 21 and 22, the respective shafts 23 and24 of which have their ends journaled inbracket bearings 25, supportedfrom the floor or from a suitable stationary object. The conveyer 3 inits action passes beneath an open ended vertical envelop magazine 26 inwhich the envelops 27 are disposed in superimposed relation, theenvelops being fed by gravity individually and successively upon theconveyer 3 as it passes therebeneath, this action being well known.

The table 1 is provided with a depending bracket 28 in the lower end ofwhich, is pivoted, as at 30, a horizontal portion 31 of a plun er lever32, the latter extending upwarddy on one side of the table 1, and havingits upper end curved, so that the plunger 5 carried thereby overhangsthe recess 2. Beneath the lever 32 a bar 33 is supported transversely ofthe table and a retractile spring 34 has its ends connected to said barand to the horizontal bar 31 forwardly of the pivot thereof, the spring34 serving by its energy to support the lunger5 normally out of therecess 2. The horizontal portion 31 at its rear end has ivotalconnection with a link35, the latter eing ivoted, as at 36, between theends of a foot ever 37, the rear end of which is pivoted to a bracket 38mounted upon a transverse bar 39 supported by the table frame. The link35 is rovided with angularly extending horizonta arms 40 and 41 whichafiord pivot pins for the lower ends of respective links 42 and 43.- Thelink 42 has eccentric pivotal connection with a disk 44 mounted upon theprojecting end of the shaft 9, said disk being loose on said shaft andcarryin .a gravity pawl 45 for engagement with t e teeth of a ratchetwheel 46, the latter being fast on said shaft. In like manner the link43 has eccentric pivotal connection with a disk 47 loosely mounted onthe projecting end of the shaft 24, the disk 47 carryin a gravity pawlfor engagement with the teet of a ratchet wheel 49, the latter beingfast on said shaft.

The construction of the strip 11 is shown in detail in Fig. 6 in whichit will be' noted that said strip is provided with im erforate sideortions 50 having two paralle longitudina lines of weakness orperforations 51 and transverse lines of weakness or perforations 52extending between the lines 51 at regular intervals, the lines 51 and 52being so spaced that the imperforate portions 53 occurring.

therebetween, and which constitute the sealing sheets or stickers abovereferred to are of the proper size previously determined by the user.

The operation will be readily understood from the foregoing description.When the lever 37 is depressed by the operator the plunger 5, throughthe connections described is moved downwardly into the recess 2. Theplunger 5 is coextensive in area with the sheets 53 and in its downwardmovement it coacts with the knives 4 to sever said sheets from theimperforate portions 50, the latter affording a continuous web betweenthe reels 10 and 18. As the plunger 5 is moving downwardly the link 35likewise moves downwardly and through the medium of the links 42 and 43and the pawl and ratchet mechanism above described and illustrated indetail in Figs. 5 and 7 simultaneously releases the reel 10 and thepulley 21, the latter constituting a drive pulley for the conveyer 3. Inthis action the conveyer 3 is advanced to bring an envelop beneath theplunger 5 and the strip 11 is simu taneously advanced in like manner,the wei ht 19 constituting a positive feeding means for said strip. Whenthe lever 37 is released, the spring 34 restores the parts to theirnormal position, the reel 10 and pulley 21 being without action in thismovement, since the pawls 45 and 48 will ride over their respectiveratchets 46 and 49. The operation above described is continued adinfinitum.

From the foregoing description it will be seen that simple and efficientmeans are provided for accomplishing the objects of the invention, but,while the elements herein shown and described, are well adapted to servethe functions set forth, it is obvious that various minor changes may bemade in the propor-' tions, shape and arrangement of the several partswithout departing from the spirit and scope of the invention as definedin the appended claims.

What is claimed, is:

A machine of the type set forth comprising a table, a reel mountedthereon, cutting knives provided on said table, a foot lever, anoperating lever, a connection between said foot lever and said operatinglever, a plunger carried by said operating lever above said knives, abelt movable transversely of said table beneath said 1plunger,supporting pulleys beneath said be t, a connection between said firstnamed connection and said reel for operating the latter upon operativemovement of said plunger, a connection between said first namedconnection and said pulley for operating the latter upon operativemovement of said plunger, and a spring engaging said operating lever torestore the parts to initial position after each operation thereof.

In testimony whereof, I affix my signature, in presence of twowitnesses.

HAROLD W. BUCHANAN.

Witnesses:

GEO. B. PENNEY,

C. W. BRAGG.

